242513315243 has 8 divisors (see below), whose sum is σ = 255302733120. Its totient is φ = 229726453320.

The previous prime is 242513315203. The next prime is 242513315267. The reversal of 242513315243 is 342513315242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242513315243 is a prime.

It is a super-2 number, since 2×242513315243² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242513315203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442673 + ... + 825218.

It is an arithmetic number, because the mean of its divisors is an integer number (31912841640).

Almost surely, 2^242513315243 is an apocalyptic number.

242513315243 is a deficient number, since it is larger than the sum of its proper divisors (12789417877).

242513315243 is a wasteful number, since it uses less digits than its factorization.

242513315243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277977.

The product of its digits is 86400, while the sum is 35.

Subtracting 242513315243 from its reverse (342513315242), we obtain a palindrome (99999999999).

The spelling of 242513315243 in words is "two hundred forty-two billion, five hundred thirteen million, three hundred fifteen thousand, two hundred forty-three".